组合发动机加力燃烧室火焰状态光学图像监测方法研究  

Optical image monitoring method for flame state of combined engine afterburner

作　　者：罗雨馨 曹振 彭江波[1,2] 杨超博 张樱娜[1,2] 胡斌 朱涛[5] 李晓晖 刘文备 亓金浩 于欣[1,2] LUO Yuxin;CAO Zhen;PENG Jiangbo;YANG Chaobo;ZHANG Yingna;HU Bin;ZHU Tao;LI Xiaohui;LIU Wenbei;QI Jinhao;YU Xin(National Key Laboratory of Laser Spatial Information,School of Astronautics,Harbin Institute of Technology,Harbin 150001,China;Institute of Opt-Electronics,School of Astronautics,Harbin Institute of Technology,Harbin 150001,China;Institute of Engineering Thermophysics,China Academy of Sciences,Beijing 100190,China;School of Aeronautics and Astronautics,University of Chinese Academy of Science,Beijing 100190,China;Jiangsu Zhongke Research Center for Clean Energy and Power,Lianyungang 222069,China)

机构地区：[1]哈尔滨工业大学航天学院激光空间信息全国重点实验室,黑龙江哈尔滨150001 [2]哈尔滨工业大学航天学院光电子技术研究所,黑龙江哈尔滨150001 [3]中国科学院工程热物理研究所,北京100190 [4]中国科学院大学航空宇航学院,北京100190 [5]江苏中科能源动力研究中心,江苏连云港222069

出　　处：《推进技术》2025年第1期228-236,共9页Journal of Propulsion Technology

基　　金：国家自然科学基金(62305087;62175053)。

摘　　要：为防止发动机在运行过程中出现熄火等异常现象,本文报道了一种基于光学图像的非接触式发动机火焰实时在线监测方法,并在组合发动机加力燃烧试验台上开展了试验验证。利用高速相机采集组合发动机加力燃烧室内火焰的OH*自发辐射图像,通过内嵌在现场可编程逻辑阵列(Field Program-mable Gate Array,FPGA)板中的图像处理系统实时处理图像并提取表征燃烧状态的火焰特征,利用阈值判断算法实现火焰状态的在线监测,其响应时间最快约为25 ms。此外,研究发现在临近熄火阶段,火焰面积脉动加快,火焰强度波动加剧,监测系统的高灵敏性使其具有捕捉熄火特征的能力,有望在未来实现对熄火等异常燃烧状态的预警。In order to prevent the engine flameout during operation,the real-time flame state monitoring in the combustion chamber is crucial.This paper presents a non-intrusive,real-time online engine flame monitoring method based on the optical images,and the experimental validation is conducted on a combined engine afterburner.A high-speed camera captures OH*spontaneous emission images of the flame in the afterburner combustion chamber,which are processed in real time using an image processing system embedded in an FPGA(Field Programmable Gate Array)board.This system can extract flame features that characterize the combustion condition,enabling online monitoring of the flame state with a response time of approximately 25 ms using a threshold judgment algorithm.Moreover,it was observed that during the flameout stage,the flame area pulsation accelerated,and the flame intensity fluctuated more intensely.The monitoring system with high sensitivity enables the detection of these flameout characteristics,which could potentially facilitate early warning of abnormal combustion states such as flameout in the future.

关 键 词：OH~*自发辐射 燃烧诊断 发动机火焰监测 火焰特征提取 非接触测量 火焰状态识别 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]